Agri-Chem's contract with Enerco specified a maximum of 90,000 cu.ft. X 10³ per day for its complexes. However, curtailments are projected to be based on actual usage rather than contractual maximums. The current natural gas usage is 85,680 cu. ft. x 10³ per day. Enerco projects curtailments in the range of 20 to 40 percent.

Question:

Which of Agri-Chem's complexes would be least affected by a gas curtailment? (Using Excel Solver).

TABLE 1 Contribution to profit and overhead
Product	$/Ton
Ammonia	80
Ammonium phosphate	120
Ammonium nitrate	140
Urea	140
Hydrofluoric acid	90
Chlorine	70
Caustic soda	60
Vinyl chloride monomer	90

TABLE 2 Operational data
Product	Capacity (tons/day)	Production Rate (% of capacity	Natural Gas Consumption
(1,000 cu. ft./ton)
Ammonia	1,500	80	8.0
Ammonium phosphate	600	90	10.0
Ammonium nitrate	700	70	12.0
Urea	200	80	12.0
Hydrofluoric acid	800	70	7.0
Chlorine	1,500	80	18.0
Caustic soda	1,600	80	20.0
Vinyl chloride monomer	1,400	60	14.0